LM22677 (3)
The LM22677 is available from Texas Instruments at Xecor. Designed for efficient high-voltage step-down (buck) regulation, the LM22677 offers wide input voltage range (4.5V to 42V), high efficiency (>90%), and internal loop compensation for simplified design. Available in the TO-263 (NDR)-7 package, it is ideal for applications in automotive, industrial, and telecommunications industries. Whether used in power supplies, battery chargers, or distributed power systems, this series ensures reliable performance, scalability, and efficiency for demanding applications. Xecor is an authorized distributor for Texas Instruments. Please view our extensive selection of the LM22677 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| LM22677TJ-ADJ/NOPB | Conv DC-DC 4.5V to 42V Step Down Single-Out 1.285V to 37V 5A 8-Pin(7+Tab) TO-263 T/R | TO263-7 | 6,872 | |
| LM22677TJ-ADJ | Ideal for use as a switching regulator or controller in electronic devices | TO-263-7 | 8,154 | |
| LM22677TJE-ADJ/NOPB | LM22677 SIMPLE SWITCHER | TO-263-7 | 5,449 |
Key Featrues
Wide Input Voltage Range (4.5V to 42V) - This feature allows the LM22677 to operate across a broad range of input voltages, making it highly versatile for various applications, from low-voltage battery-powered systems to high-voltage industrial equipment. Its flexibility ensures reliable performance in diverse environments.
Internally Compensated Voltage Mode Control - The internal compensation simplifies the design process by eliminating the need for external loop compensation components. This reduces design complexity and ensures stable operation with minimal effort, improving efficiency and reliability.
Adjustable Switching Frequency and Synchronization - The ability to adjust the switching frequency from 200 kHz to 1 MHz allows for optimization of efficiency and component size. Additionally, synchronization with external clocks or other regulators enhances system-level performance and reduces noise interference.
Integrated Soft-Start and Boot-Strap Diode - The integrated soft-start feature prevents inrush current during startup, protecting the system and components. The built-in boot-strap diode reduces external component count, simplifying the design and improving overall efficiency.
Thermal Shutdown and Current Limiting - These built-in protection features safeguard the regulator against overheating and overcurrent conditions, enhancing durability and reliability in demanding applications. This ensures safe operation even under accidental overloads or high-temperature environments.
Internally Compensated Voltage Mode Control - The internal compensation simplifies the design process by eliminating the need for external loop compensation components. This reduces design complexity and ensures stable operation with minimal effort, improving efficiency and reliability.
Adjustable Switching Frequency and Synchronization - The ability to adjust the switching frequency from 200 kHz to 1 MHz allows for optimization of efficiency and component size. Additionally, synchronization with external clocks or other regulators enhances system-level performance and reduces noise interference.
Integrated Soft-Start and Boot-Strap Diode - The integrated soft-start feature prevents inrush current during startup, protecting the system and components. The built-in boot-strap diode reduces external component count, simplifying the design and improving overall efficiency.
Thermal Shutdown and Current Limiting - These built-in protection features safeguard the regulator against overheating and overcurrent conditions, enhancing durability and reliability in demanding applications. This ensures safe operation even under accidental overloads or high-temperature environments.
Applications
Industrial Power Supply: The LM22677 is ideal for industrial power supply applications, where a wide input voltage range (4.5V to 42V) and high efficiency (>90%) are required. Its ability to deliver up to 5A of load current makes it suitable for powering PLCs, motor controllers, and other industrial equipment, ensuring stable operation even in harsh environments with temperatures ranging from -40°C to +125°C.
Automotive Power Management: The LM22677-Q1 variant, being AEC-Q100 Grade 1 qualified, is perfect for automotive power management systems. It can efficiently step down high-voltage automotive battery inputs (up to 42V) to lower voltages required by infotainment systems, ADAS modules, or sensors, while operating reliably across the automotive temperature range.
Portable Electronics: The LM22677 is well-suited for portable electronics, such as handheld devices or battery-powered tools, due to its wide input voltage range and adjustable output voltage (down to 1.285V). Its low quiescent current (25 µA in shutdown mode) and high efficiency help extend battery life, making it ideal for energy-conscious designs.
LED Lighting Systems: The LM22677 can be used in LED lighting systems, where it efficiently steps down higher input voltages to the required levels for driving LED arrays. Its adjustable switching frequency and synchronization capabilities allow for optimized EMI performance, while its integrated soft-start feature ensures smooth power-up sequences, protecting the LEDs from inrush current.
Automotive Power Management: The LM22677-Q1 variant, being AEC-Q100 Grade 1 qualified, is perfect for automotive power management systems. It can efficiently step down high-voltage automotive battery inputs (up to 42V) to lower voltages required by infotainment systems, ADAS modules, or sensors, while operating reliably across the automotive temperature range.
Portable Electronics: The LM22677 is well-suited for portable electronics, such as handheld devices or battery-powered tools, due to its wide input voltage range and adjustable output voltage (down to 1.285V). Its low quiescent current (25 µA in shutdown mode) and high efficiency help extend battery life, making it ideal for energy-conscious designs.
LED Lighting Systems: The LM22677 can be used in LED lighting systems, where it efficiently steps down higher input voltages to the required levels for driving LED arrays. Its adjustable switching frequency and synchronization capabilities allow for optimized EMI performance, while its integrated soft-start feature ensures smooth power-up sequences, protecting the LEDs from inrush current.
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